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2026-06-23 - 20:26
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Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Characteristics of the 20 highest latencies:
System rack6slot0.osadl.org (updated Tue Jun 23, 2026 13:02:27)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2857499254238,13cyclictest0-21swapper/2211:45:2015
2857499254238,13cyclictest0-21swapper/2211:45:2015
2857499254238,13cyclictest0-21swapper/2211:45:2015
2855699250244,4cyclictest0-21swapper/1007:20:152
2857399227209,15cyclictest4407-21CPU14
2857399227209,15cyclictest4407-21CPU14
2857499225206,13cyclictest2459-21CPU15
2857499225206,13cyclictest2459-21CPU15
2857299225221,2cyclictest0-21swapper/2008:15:1513
2857299225221,2cyclictest0-21swapper/2008:15:1513
2856699225205,11cyclictest0-21swapper/1810:15:2110
2856699225205,11cyclictest0-21swapper/1810:15:2110
2857499223210,11cyclictest0-21swapper/2209:40:3015
2857499223210,11cyclictest0-21swapper/2209:40:3015
2857499223210,11cyclictest0-21swapper/2209:40:3015
2856699222208,9cyclictest0-21swapper/1809:32:4910
2856699222208,9cyclictest0-21swapper/1809:32:4910
2856699222205,7cyclictest0-21swapper/1810:05:1110
2856699222205,7cyclictest0-21swapper/1810:05:1110
2856699222205,7cyclictest0-21swapper/1810:05:1110
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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